1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/ptlrpc/layout.c
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Nikita Danilov <nikita@clusterfs.com>
43 #if !defined(__REQ_LAYOUT_USER__)
46 # define EXPORT_SYMTAB
48 #define DEBUG_SUBSYSTEM S_RPC
51 #include <linux/module.h>
53 # include <liblustre.h>
56 /* LUSTRE_VERSION_CODE */
57 #include <lustre_ver.h>
59 #include <obd_support.h>
60 /* lustre_swab_mdt_body */
61 #include <lustre/lustre_idl.h>
62 /* obd2cli_tgt() (required by DEBUG_REQ()) */
65 /* __REQ_LAYOUT_USER__ */
67 /* struct ptlrpc_request, lustre_msg* */
68 #include <lustre_req_layout.h>
69 #include <lustre_acl.h>
72 * empty set of fields... for suitable definition of emptiness.
74 static const struct req_msg_field *empty[] = {
78 static const struct req_msg_field *mgs_target_info_only[] = {
83 static const struct req_msg_field *mgs_set_info[] = {
88 static const struct req_msg_field *log_cancel_client[] = {
93 static const struct req_msg_field *mdt_body_only[] = {
98 static const struct req_msg_field *mdt_body_capa[] = {
104 static const struct req_msg_field *quotactl_only[] = {
108 static const struct req_msg_field *quota_adjust_qunit_only[] = {
110 &RMF_QUOTA_ADJUST_QUNIT
113 static const struct req_msg_field *qunit_data_only[] = {
118 static const struct req_msg_field *mdt_close_client[] = {
125 static const struct req_msg_field *obd_statfs_server[] = {
130 static const struct req_msg_field *seq_query_client[] = {
136 static const struct req_msg_field *seq_query_server[] = {
141 static const struct req_msg_field *fld_query_client[] = {
147 static const struct req_msg_field *fld_query_server[] = {
152 static const struct req_msg_field *mds_getattr_name_client[] = {
159 static const struct req_msg_field *mds_reint_client[] = {
164 static const struct req_msg_field *mds_reint_create_client[] = {
171 static const struct req_msg_field *mds_reint_create_slave_client[] = {
180 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
189 static const struct req_msg_field *mds_reint_create_sym_client[] = {
198 static const struct req_msg_field *mds_reint_open_client[] = {
207 static const struct req_msg_field *mds_reint_open_server[] = {
216 static const struct req_msg_field *mds_reint_unlink_client[] = {
224 static const struct req_msg_field *mds_reint_link_client[] = {
233 static const struct req_msg_field *mds_reint_rename_client[] = {
243 static const struct req_msg_field *mds_last_unlink_server[] = {
252 static const struct req_msg_field *mds_reint_setattr_client[] = {
262 static const struct req_msg_field *mds_reint_setxattr_client[] = {
270 static const struct req_msg_field *obd_connect_client[] = {
278 static const struct req_msg_field *obd_connect_server[] = {
283 static const struct req_msg_field *mds_set_info_client[] = {
289 static const struct req_msg_field *ldlm_enqueue_client[] = {
294 static const struct req_msg_field *ldlm_enqueue_server[] = {
299 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
305 static const struct req_msg_field *ldlm_cp_callback_client[] = {
311 static const struct req_msg_field *ldlm_gl_callback_server[] = {
316 static const struct req_msg_field *ldlm_intent_client[] = {
323 static const struct req_msg_field *ldlm_intent_server[] = {
331 static const struct req_msg_field *ldlm_intent_open_server[] = {
341 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
345 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
350 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
359 static const struct req_msg_field *ldlm_intent_create_client[] = {
363 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
369 static const struct req_msg_field *ldlm_intent_open_client[] = {
373 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
381 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
385 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
390 static const struct req_msg_field *mds_getxattr_client[] = {
398 static const struct req_msg_field *mds_getxattr_server[] = {
404 static const struct req_msg_field *mds_getattr_server[] = {
413 static const struct req_msg_field *mds_setattr_server[] = {
422 static const struct req_msg_field *llog_catinfo_client[] = {
428 static const struct req_msg_field *llog_catinfo_server[] = {
433 static const struct req_msg_field *llog_origin_handle_create_client[] = {
439 static const struct req_msg_field *llogd_body_only[] = {
444 static const struct req_msg_field *llog_log_hdr_only[] = {
449 static const struct req_msg_field *llogd_conn_body_only[] = {
454 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
460 static const struct req_msg_field *ost_body_only[] = {
465 static const struct req_msg_field *ost_body_capa[] = {
471 static const struct req_msg_field *ost_destroy_client[] = {
479 static const struct req_msg_field *ost_brw_client[] = {
487 static const struct req_msg_field *ost_brw_server[] = {
493 static const struct req_msg_field *ost_set_info_client[] = {
499 static const struct req_msg_field *ost_get_info_generic_server[] = {
504 static const struct req_msg_field *ost_get_info_generic_client[] = {
509 static const struct req_msg_field *ost_get_last_id_server[] = {
514 static const struct req_msg_field *ost_get_fiemap_client[] = {
520 static const struct req_msg_field *ost_get_fiemap_server[] = {
525 static const struct req_format *req_formats[] = {
538 &RQF_MDS_GETATTR_NAME,
547 &RQF_MDS_DONE_WRITING,
549 &RQF_MDS_REINT_CREATE,
550 &RQF_MDS_REINT_CREATE_RMT_ACL,
551 &RQF_MDS_REINT_CREATE_SLAVE,
552 &RQF_MDS_REINT_CREATE_SYM,
554 &RQF_MDS_REINT_UNLINK,
556 &RQF_MDS_REINT_RENAME,
557 &RQF_MDS_REINT_SETATTR,
558 &RQF_MDS_REINT_SETXATTR,
561 &RQF_MDS_QUOTA_DQACQ,
567 &RQF_OST_QUOTA_ADJUST_QUNIT,
577 &RQF_OST_SET_GRANT_INFO,
578 &RQF_OST_GET_INFO_GENERIC,
579 &RQF_OST_GET_INFO_LAST_ID,
580 &RQF_OST_GET_INFO_FIEMAP,
582 &RQF_LDLM_ENQUEUE_LVB,
586 &RQF_LDLM_CP_CALLBACK,
587 &RQF_LDLM_BL_CALLBACK,
588 &RQF_LDLM_GL_CALLBACK,
590 &RQF_LDLM_INTENT_GETATTR,
591 &RQF_LDLM_INTENT_OPEN,
592 &RQF_LDLM_INTENT_CREATE,
593 &RQF_LDLM_INTENT_UNLINK,
596 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
597 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
598 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
599 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
600 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
601 &RQF_LLOG_ORIGIN_CONNECT
604 struct req_msg_field {
606 const char *rmf_name;
608 * Field length. (-1) means "variable length".
611 void (*rmf_swabber)(void *);
612 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
616 RMF_F_STRING = 1 << 0,
617 RMF_F_NO_SIZE_CHECK = 1 << 1
625 #define DEFINE_MSGF(name, flags, size, swabber) { \
626 .rmf_name = (name), \
627 .rmf_flags = (flags), \
628 .rmf_size = (size), \
629 .rmf_swabber = (void (*)(void*))(swabber) \
632 const struct req_msg_field RMF_GENERIC_DATA =
633 DEFINE_MSGF("generic_data", 0,
635 EXPORT_SYMBOL(RMF_GENERIC_DATA);
637 const struct req_msg_field RMF_MGS_TARGET_INFO =
638 DEFINE_MSGF("mgs_target_info", 0,
639 sizeof(struct mgs_target_info),
640 lustre_swab_mgs_target_info);
641 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
643 const struct req_msg_field RMF_MGS_SEND_PARAM =
644 DEFINE_MSGF("mgs_send_param", 0,
645 sizeof(struct mgs_send_param),
647 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
649 const struct req_msg_field RMF_SETINFO_VAL =
650 DEFINE_MSGF("setinfo_val", 0, -1, NULL);
651 EXPORT_SYMBOL(RMF_SETINFO_VAL);
653 const struct req_msg_field RMF_SEQ_OPC =
654 DEFINE_MSGF("seq_query_opc", 0,
655 sizeof(__u32), lustre_swab_generic_32s);
656 EXPORT_SYMBOL(RMF_SEQ_OPC);
658 const struct req_msg_field RMF_SEQ_RANGE =
659 DEFINE_MSGF("seq_query_range", 0,
660 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
661 EXPORT_SYMBOL(RMF_SEQ_RANGE);
663 const struct req_msg_field RMF_FLD_OPC =
664 DEFINE_MSGF("fld_query_opc", 0,
665 sizeof(__u32), lustre_swab_generic_32s);
666 EXPORT_SYMBOL(RMF_FLD_OPC);
668 const struct req_msg_field RMF_FLD_MDFLD =
669 DEFINE_MSGF("fld_query_mdfld", 0,
670 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
671 EXPORT_SYMBOL(RMF_FLD_MDFLD);
673 const struct req_msg_field RMF_MDT_BODY =
674 DEFINE_MSGF("mdt_body", 0,
675 sizeof(struct mdt_body), lustre_swab_mdt_body);
676 EXPORT_SYMBOL(RMF_MDT_BODY);
678 const struct req_msg_field RMF_OBD_QUOTACTL =
679 DEFINE_MSGF("obd_quotactl", 0,
680 sizeof(struct obd_quotactl), lustre_swab_obd_quotactl);
681 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
683 const struct req_msg_field RMF_QUOTA_ADJUST_QUNIT =
684 DEFINE_MSGF("quota_adjust_qunit", 0,
685 sizeof(struct quota_adjust_qunit),
686 lustre_swab_quota_adjust_qunit);
687 EXPORT_SYMBOL(RMF_QUOTA_ADJUST_QUNIT);
689 const struct req_msg_field RMF_QUNIT_DATA =
690 DEFINE_MSGF("qunit_data", 0,
691 sizeof(struct qunit_data), NULL);
692 EXPORT_SYMBOL(RMF_QUNIT_DATA);
694 const struct req_msg_field RMF_MDT_EPOCH =
695 DEFINE_MSGF("mdt_epoch", 0,
696 sizeof(struct mdt_epoch), lustre_swab_mdt_epoch);
697 EXPORT_SYMBOL(RMF_MDT_EPOCH);
699 const struct req_msg_field RMF_PTLRPC_BODY =
700 DEFINE_MSGF("ptlrpc_body", 0,
701 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body);
702 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
704 const struct req_msg_field RMF_OBD_STATFS =
705 DEFINE_MSGF("obd_statfs", 0,
706 sizeof(struct obd_statfs), lustre_swab_obd_statfs);
707 EXPORT_SYMBOL(RMF_OBD_STATFS);
709 const struct req_msg_field RMF_SETINFO_KEY =
710 DEFINE_MSGF("setinfo_key", 0, -1, NULL);
711 EXPORT_SYMBOL(RMF_SETINFO_KEY);
713 const struct req_msg_field RMF_NAME =
714 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL);
715 EXPORT_SYMBOL(RMF_NAME);
717 const struct req_msg_field RMF_SYMTGT =
718 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL);
719 EXPORT_SYMBOL(RMF_SYMTGT);
721 const struct req_msg_field RMF_TGTUUID =
722 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
723 EXPORT_SYMBOL(RMF_TGTUUID);
725 const struct req_msg_field RMF_CLUUID =
726 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
727 EXPORT_SYMBOL(RMF_CLUUID);
729 const struct req_msg_field RMF_STRING =
730 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL);
731 EXPORT_SYMBOL(RMF_STRING);
733 const struct req_msg_field RMF_LLOGD_BODY =
734 DEFINE_MSGF("llogd_body", 0,
735 sizeof(struct llogd_body), lustre_swab_llogd_body);
736 EXPORT_SYMBOL(RMF_LLOGD_BODY);
738 const struct req_msg_field RMF_LLOG_LOG_HDR =
739 DEFINE_MSGF("llog_log_hdr", 0,
740 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr);
741 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
743 const struct req_msg_field RMF_LLOGD_CONN_BODY =
744 DEFINE_MSGF("llogd_conn_body", 0,
745 sizeof(struct llogd_conn_body),
746 lustre_swab_llogd_conn_body);
747 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
750 * connection handle received in MDS_CONNECT request.
754 const struct req_msg_field RMF_CONN =
755 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL);
756 EXPORT_SYMBOL(RMF_CONN);
758 const struct req_msg_field RMF_CONNECT_DATA =
760 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
761 sizeof(struct obd_connect_data), lustre_swab_connect);
762 EXPORT_SYMBOL(RMF_CONNECT_DATA);
764 const struct req_msg_field RMF_DLM_REQ =
765 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
766 sizeof(struct ldlm_request), lustre_swab_ldlm_request);
767 EXPORT_SYMBOL(RMF_DLM_REQ);
769 const struct req_msg_field RMF_DLM_REP =
770 DEFINE_MSGF("dlm_rep", 0,
771 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply);
772 EXPORT_SYMBOL(RMF_DLM_REP);
774 const struct req_msg_field RMF_LDLM_INTENT =
775 DEFINE_MSGF("ldlm_intent", 0,
776 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent);
777 EXPORT_SYMBOL(RMF_LDLM_INTENT);
779 const struct req_msg_field RMF_DLM_LVB =
780 DEFINE_MSGF("dlm_lvb", 0, sizeof(struct ost_lvb), NULL);
781 EXPORT_SYMBOL(RMF_DLM_LVB);
783 const struct req_msg_field RMF_MDT_MD =
784 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL);
785 EXPORT_SYMBOL(RMF_MDT_MD);
787 const struct req_msg_field RMF_REC_REINT =
788 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
789 lustre_swab_mdt_rec_reint);
790 EXPORT_SYMBOL(RMF_REC_REINT);
792 const struct req_msg_field RMF_REC_JOINFILE =
793 DEFINE_MSGF("rec_joinfile", 0, sizeof(struct mdt_rec_join),
794 lustre_swab_mdt_rec_join);
795 EXPORT_SYMBOL(RMF_REC_JOINFILE);
797 /* FIXME: this length should be defined as a macro */
798 const struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1, NULL);
799 EXPORT_SYMBOL(RMF_EADATA);
801 const struct req_msg_field RMF_ACL =
802 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
803 LUSTRE_POSIX_ACL_MAX_SIZE, NULL);
804 EXPORT_SYMBOL(RMF_ACL);
806 const struct req_msg_field RMF_LOGCOOKIES =
807 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
808 sizeof(struct llog_cookie), NULL);
809 EXPORT_SYMBOL(RMF_LOGCOOKIES);
811 const struct req_msg_field RMF_CAPA1 =
812 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
813 lustre_swab_lustre_capa);
814 EXPORT_SYMBOL(RMF_CAPA1);
816 const struct req_msg_field RMF_CAPA2 =
817 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
818 lustre_swab_lustre_capa);
819 EXPORT_SYMBOL(RMF_CAPA2);
824 const struct req_msg_field RMF_OST_BODY =
825 DEFINE_MSGF("ost_body", 0,
826 sizeof(struct ost_body), lustre_swab_ost_body);
827 EXPORT_SYMBOL(RMF_OST_BODY);
829 const struct req_msg_field RMF_OBD_IOOBJ =
830 DEFINE_MSGF("obd_ioobj", 0,
831 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj);
832 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
834 const struct req_msg_field RMF_NIOBUF_REMOTE =
835 DEFINE_MSGF("niobuf_remote", 0, -1, lustre_swab_niobuf_remote);
836 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
838 const struct req_msg_field RMF_OBD_ID =
839 DEFINE_MSGF("obd_id", 0,
840 sizeof(obd_id), lustre_swab_ost_last_id);
841 EXPORT_SYMBOL(RMF_OBD_ID);
843 const struct req_msg_field RMF_FIEMAP_KEY =
844 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
846 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
848 const struct req_msg_field RMF_FIEMAP_VAL =
849 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap);
850 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
861 const struct req_msg_field **d;
865 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
879 #define DEFINE_REQ_FMT0(name, client, server) \
880 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
882 const struct req_format RQF_OBD_PING =
883 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
884 EXPORT_SYMBOL(RQF_OBD_PING);
886 const struct req_format RQF_SEC_CTX =
887 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
888 EXPORT_SYMBOL(RQF_SEC_CTX);
890 const struct req_format RQF_MGS_TARGET_REG =
891 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
892 mgs_target_info_only);
893 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
895 const struct req_format RQF_MGS_SET_INFO =
896 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
898 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
900 const struct req_format RQF_SEQ_QUERY =
901 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
902 EXPORT_SYMBOL(RQF_SEQ_QUERY);
904 const struct req_format RQF_FLD_QUERY =
905 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
906 EXPORT_SYMBOL(RQF_FLD_QUERY);
908 const struct req_format RQF_LOG_CANCEL =
909 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
910 EXPORT_SYMBOL(RQF_LOG_CANCEL);
912 const struct req_format RQF_MDS_QUOTACHECK =
913 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
914 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
916 const struct req_format RQF_OST_QUOTACHECK =
917 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
918 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
920 const struct req_format RQF_MDS_QUOTACTL =
921 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
922 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
924 const struct req_format RQF_OST_QUOTACTL =
925 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
926 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
928 const struct req_format RQF_OST_QUOTA_ADJUST_QUNIT =
929 DEFINE_REQ_FMT0("OST_QUOTA_ADJUST_QUNIT", quota_adjust_qunit_only,
930 quota_adjust_qunit_only);
931 EXPORT_SYMBOL(RQF_OST_QUOTA_ADJUST_QUNIT);
933 const struct req_format RQF_QC_CALLBACK =
934 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
935 EXPORT_SYMBOL(RQF_QC_CALLBACK);
937 const struct req_format RQF_MDS_QUOTA_DQACQ =
938 DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
939 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
941 const struct req_format RQF_MDS_GETSTATUS =
942 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
943 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
945 const struct req_format RQF_MDS_STATFS =
946 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
947 EXPORT_SYMBOL(RQF_MDS_STATFS);
949 const struct req_format RQF_MDS_SYNC =
950 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
951 EXPORT_SYMBOL(RQF_MDS_SYNC);
953 const struct req_format RQF_MDS_GETATTR =
954 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
955 EXPORT_SYMBOL(RQF_MDS_GETATTR);
957 const struct req_format RQF_MDS_GETXATTR =
958 DEFINE_REQ_FMT0("MDS_GETXATTR",
959 mds_getxattr_client, mds_getxattr_server);
960 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
962 const struct req_format RQF_MDS_GETATTR_NAME =
963 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
964 mds_getattr_name_client, mds_getattr_server);
965 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
967 const struct req_format RQF_MDS_REINT =
968 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
969 EXPORT_SYMBOL(RQF_MDS_REINT);
971 const struct req_format RQF_MDS_REINT_CREATE =
972 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
973 mds_reint_create_client, mdt_body_capa);
974 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
976 const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
977 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
978 mds_reint_create_rmt_acl_client, mdt_body_capa);
979 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
981 const struct req_format RQF_MDS_REINT_CREATE_SLAVE =
982 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
983 mds_reint_create_slave_client, mdt_body_capa);
984 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
986 const struct req_format RQF_MDS_REINT_CREATE_SYM =
987 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
988 mds_reint_create_sym_client, mdt_body_capa);
989 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
991 const struct req_format RQF_MDS_REINT_OPEN =
992 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
993 mds_reint_open_client, mds_reint_open_server);
994 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
996 const struct req_format RQF_MDS_REINT_UNLINK =
997 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
998 mds_last_unlink_server);
999 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1001 const struct req_format RQF_MDS_REINT_LINK =
1002 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1003 mds_reint_link_client, mdt_body_only);
1004 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1006 const struct req_format RQF_MDS_REINT_RENAME =
1007 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1008 mds_last_unlink_server);
1009 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1011 const struct req_format RQF_MDS_REINT_SETATTR =
1012 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1013 mds_reint_setattr_client, mds_setattr_server);
1014 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1016 const struct req_format RQF_MDS_REINT_SETXATTR =
1017 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1018 mds_reint_setxattr_client, mdt_body_only);
1019 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1021 const struct req_format RQF_MDS_CONNECT =
1022 DEFINE_REQ_FMT0("MDS_CONNECT",
1023 obd_connect_client, obd_connect_server);
1024 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1026 const struct req_format RQF_MDS_DISCONNECT =
1027 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1028 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1030 const struct req_format RQF_MDS_SET_INFO =
1031 DEFINE_REQ_FMT0("MDS_SET_INFO", mds_set_info_client, empty);
1032 EXPORT_SYMBOL(RQF_MDS_SET_INFO);
1034 const struct req_format RQF_LDLM_ENQUEUE =
1035 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1036 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1037 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1039 const struct req_format RQF_LDLM_ENQUEUE_LVB =
1040 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1041 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1042 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1044 const struct req_format RQF_LDLM_CONVERT =
1045 DEFINE_REQ_FMT0("LDLM_CONVERT",
1046 ldlm_enqueue_client, ldlm_enqueue_server);
1047 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1049 const struct req_format RQF_LDLM_CANCEL =
1050 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1051 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1053 const struct req_format RQF_LDLM_CALLBACK =
1054 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1055 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1057 const struct req_format RQF_LDLM_CP_CALLBACK =
1058 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1059 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1061 const struct req_format RQF_LDLM_BL_CALLBACK =
1062 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1063 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1065 const struct req_format RQF_LDLM_GL_CALLBACK =
1066 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1067 ldlm_gl_callback_server);
1068 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1070 const struct req_format RQF_LDLM_INTENT =
1071 DEFINE_REQ_FMT0("LDLM_INTENT",
1072 ldlm_intent_client, ldlm_intent_server);
1073 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1075 const struct req_format RQF_LDLM_INTENT_GETATTR =
1076 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1077 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1078 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1080 const struct req_format RQF_LDLM_INTENT_OPEN =
1081 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1082 ldlm_intent_open_client, ldlm_intent_open_server);
1083 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1085 const struct req_format RQF_LDLM_INTENT_CREATE =
1086 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1087 ldlm_intent_create_client, ldlm_intent_getattr_server);
1088 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1090 const struct req_format RQF_LDLM_INTENT_UNLINK =
1091 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1092 ldlm_intent_unlink_client, ldlm_intent_server);
1093 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1095 const struct req_format RQF_MDS_CLOSE =
1096 DEFINE_REQ_FMT0("MDS_CLOSE",
1097 mdt_close_client, mds_last_unlink_server);
1098 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1100 const struct req_format RQF_MDS_PIN =
1101 DEFINE_REQ_FMT0("MDS_PIN",
1102 mdt_body_capa, mdt_body_only);
1103 EXPORT_SYMBOL(RQF_MDS_PIN);
1105 const struct req_format RQF_MDS_UNPIN =
1106 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1107 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1109 const struct req_format RQF_MDS_DONE_WRITING =
1110 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1111 mdt_close_client, mdt_body_only);
1112 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1114 const struct req_format RQF_MDS_READPAGE =
1115 DEFINE_REQ_FMT0("MDS_READPAGE",
1116 mdt_body_capa, mdt_body_only);
1117 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1119 /* This is for split */
1120 const struct req_format RQF_MDS_WRITEPAGE =
1121 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1122 mdt_body_capa, mdt_body_only);
1123 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1125 const struct req_format RQF_MDS_IS_SUBDIR =
1126 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1127 mdt_body_only, mdt_body_only);
1128 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1130 const struct req_format RQF_LLOG_CATINFO =
1131 DEFINE_REQ_FMT0("LLOG_CATINFO",
1132 llog_catinfo_client, llog_catinfo_server);
1133 EXPORT_SYMBOL(RQF_LLOG_CATINFO);
1135 const struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1136 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1137 llog_origin_handle_create_client, llogd_body_only);
1138 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1140 const struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1141 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1142 llogd_body_only, llogd_body_only);
1143 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1145 const struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1146 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1147 llogd_body_only, llog_origin_handle_next_block_server);
1148 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1150 const struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1151 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1152 llogd_body_only, llog_origin_handle_next_block_server);
1153 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1155 const struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1156 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1157 llogd_body_only, llog_log_hdr_only);
1158 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1160 const struct req_format RQF_LLOG_ORIGIN_CONNECT =
1161 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1162 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1164 const struct req_format RQF_OST_CONNECT =
1165 DEFINE_REQ_FMT0("OST_CONNECT",
1166 obd_connect_client, obd_connect_server);
1167 EXPORT_SYMBOL(RQF_OST_CONNECT);
1169 const struct req_format RQF_OST_DISCONNECT =
1170 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1171 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1173 const struct req_format RQF_OST_GETATTR =
1174 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1175 EXPORT_SYMBOL(RQF_OST_GETATTR);
1177 const struct req_format RQF_OST_SETATTR =
1178 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1179 EXPORT_SYMBOL(RQF_OST_SETATTR);
1181 const struct req_format RQF_OST_CREATE =
1182 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1183 EXPORT_SYMBOL(RQF_OST_CREATE);
1185 const struct req_format RQF_OST_PUNCH =
1186 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1187 EXPORT_SYMBOL(RQF_OST_PUNCH);
1189 const struct req_format RQF_OST_SYNC =
1190 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1191 EXPORT_SYMBOL(RQF_OST_SYNC);
1193 const struct req_format RQF_OST_DESTROY =
1194 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1195 EXPORT_SYMBOL(RQF_OST_DESTROY);
1197 const struct req_format RQF_OST_BRW =
1198 DEFINE_REQ_FMT0("OST_BRW", ost_brw_client, ost_brw_server);
1199 EXPORT_SYMBOL(RQF_OST_BRW);
1201 const struct req_format RQF_OST_STATFS =
1202 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1203 EXPORT_SYMBOL(RQF_OST_STATFS);
1205 const struct req_format RQF_OST_SET_INFO =
1206 DEFINE_REQ_FMT0("OST_SET_INFO", ost_set_info_client, empty);
1207 EXPORT_SYMBOL(RQF_OST_SET_INFO);
1209 const struct req_format RQF_OST_SET_GRANT_INFO =
1210 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_set_info_client,
1212 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1214 const struct req_format RQF_OST_GET_INFO_GENERIC =
1215 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1216 ost_get_info_generic_server);
1217 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1219 const struct req_format RQF_OST_GET_INFO_LAST_ID =
1220 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1221 ost_get_last_id_server);
1222 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1224 const struct req_format RQF_OST_GET_INFO_FIEMAP =
1225 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1226 ost_get_fiemap_server);
1227 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1230 #if !defined(__REQ_LAYOUT_USER__)
1232 int req_layout_init(void)
1238 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1239 struct req_format *rf;
1241 rf = (struct req_format *)req_formats[i];
1243 for (j = 0; j < RCL_NR; ++j) {
1244 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1245 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1246 struct req_msg_field *field;
1248 field = (typeof(field))rf->rf_fields[j].d[k];
1249 LASSERT(field->rmf_offset[i][j] == 0);
1251 * k + 1 to detect unused format/field
1254 field->rmf_offset[i][j] = k + 1;
1260 EXPORT_SYMBOL(req_layout_init);
1262 void req_layout_fini(void)
1265 EXPORT_SYMBOL(req_layout_fini);
1267 void req_capsule_init_area(struct req_capsule *pill)
1271 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1272 pill->rc_area[RCL_CLIENT][i] = -1;
1273 pill->rc_area[RCL_SERVER][i] = -1;
1276 EXPORT_SYMBOL(req_capsule_init_area);
1279 * Initialize capsule.
1281 * @area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1282 * variable-sized fields.
1284 void req_capsule_init(struct req_capsule *pill,
1285 struct ptlrpc_request *req,
1286 enum req_location location)
1288 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1290 memset(pill, 0, sizeof *pill);
1292 pill->rc_loc = location;
1293 req_capsule_init_area(pill);
1295 EXPORT_SYMBOL(req_capsule_init);
1297 void req_capsule_fini(struct req_capsule *pill)
1300 EXPORT_SYMBOL(req_capsule_fini);
1302 static int __req_format_is_sane(const struct req_format *fmt)
1305 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1306 req_formats[fmt->rf_idx] == fmt;
1309 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1310 enum req_location loc)
1312 struct ptlrpc_request *req;
1315 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1318 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1320 LASSERT(pill->rc_fmt == NULL);
1321 LASSERT(__req_format_is_sane(fmt));
1325 EXPORT_SYMBOL(req_capsule_set);
1327 int req_capsule_filled_sizes(struct req_capsule *pill,
1328 enum req_location loc)
1330 const struct req_format *fmt = pill->rc_fmt;
1333 LASSERT(fmt != NULL);
1335 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1336 if (pill->rc_area[loc][i] == -1) {
1337 pill->rc_area[loc][i] =
1338 fmt->rf_fields[loc].d[i]->rmf_size;
1339 if (pill->rc_area[loc][i] == -1) {
1340 /* skip the following fields */
1341 LASSERT(loc != RCL_SERVER);
1348 EXPORT_SYMBOL(req_capsule_filled_sizes);
1350 int req_capsule_server_pack(struct req_capsule *pill)
1352 const struct req_format *fmt;
1356 LASSERT(pill->rc_loc == RCL_SERVER);
1358 LASSERT(fmt != NULL);
1360 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1361 rc = lustre_pack_reply(pill->rc_req, count,
1362 pill->rc_area[RCL_SERVER], NULL);
1364 DEBUG_REQ(D_ERROR, pill->rc_req,
1365 "Cannot pack %d fields in format `%s': ",
1366 count, fmt->rf_name);
1370 EXPORT_SYMBOL(req_capsule_server_pack);
1372 static int __req_capsule_offset(const struct req_capsule *pill,
1373 const struct req_msg_field *field,
1374 enum req_location loc)
1378 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1379 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1380 pill->rc_fmt->rf_name,
1381 field->rmf_name, offset, loc);
1383 LASSERT(0 <= offset && offset < (sizeof(pill->rc_swabbed) << 3));
1387 static void *__req_capsule_get(struct req_capsule *pill,
1388 const struct req_msg_field *field,
1389 enum req_location loc,
1390 void (*swabber)( void *))
1392 const struct req_format *fmt;
1393 struct lustre_msg *msg;
1398 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1400 static const char *rcl_names[RCL_NR] = {
1401 [RCL_CLIENT] = "client",
1402 [RCL_SERVER] = "server"
1405 LASSERT(pill != NULL);
1406 LASSERT(pill != LP_POISON);
1408 LASSERT(fmt != NULL);
1409 LASSERT(fmt != LP_POISON);
1410 LASSERT(__req_format_is_sane(fmt));
1412 offset = __req_capsule_offset(pill, field, loc);
1414 msg = __req_msg(pill, loc);
1415 LASSERT(msg != NULL);
1417 getter = (field->rmf_flags & RMF_F_STRING) ?
1418 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1420 if (pill->rc_area[loc][offset] != -1)
1421 len = pill->rc_area[loc][offset];
1423 len = max(field->rmf_size, 0);
1424 value = getter(msg, offset, len);
1426 swabber = swabber ?: field->rmf_swabber;
1427 if (!(pill->rc_swabbed & (1 << offset)) && loc != pill->rc_loc &&
1428 swabber != NULL && value != NULL &&
1429 lustre_msg_swabbed(msg)) {
1431 pill->rc_swabbed |= (1 << offset);
1433 if (value == NULL) {
1434 DEBUG_REQ(D_ERROR, pill->rc_req,
1435 "Wrong buffer for field `%s' (%d of %d) "
1436 "in format `%s': %d vs. %d (%s)\n",
1437 field->rmf_name, offset, lustre_msg_bufcount(msg), fmt->rf_name,
1438 lustre_msg_buflen(msg, offset), len,
1445 void *req_capsule_client_get(struct req_capsule *pill,
1446 const struct req_msg_field *field)
1448 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1450 EXPORT_SYMBOL(req_capsule_client_get);
1452 void *req_capsule_client_swab_get(struct req_capsule *pill,
1453 const struct req_msg_field *field,
1454 void (*swabber)(void* ))
1456 return __req_capsule_get(pill, field, RCL_CLIENT, swabber);
1458 EXPORT_SYMBOL(req_capsule_client_swab_get);
1460 void *req_capsule_client_sized_get(struct req_capsule *pill,
1461 const struct req_msg_field *field,
1464 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1465 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1467 EXPORT_SYMBOL(req_capsule_client_sized_get);
1469 void *req_capsule_server_get(struct req_capsule *pill,
1470 const struct req_msg_field *field)
1472 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1474 EXPORT_SYMBOL(req_capsule_server_get);
1476 void *req_capsule_server_swab_get(struct req_capsule *pill,
1477 const struct req_msg_field *field,
1480 return __req_capsule_get(pill, field, RCL_SERVER, swabber);
1482 EXPORT_SYMBOL(req_capsule_server_swab_get);
1485 void *req_capsule_server_sized_get(struct req_capsule *pill,
1486 const struct req_msg_field *field,
1489 req_capsule_set_size(pill, field, RCL_SERVER, len);
1490 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1492 EXPORT_SYMBOL(req_capsule_server_sized_get);
1494 const void *req_capsule_other_get(struct req_capsule *pill,
1495 const struct req_msg_field *field)
1497 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL);
1499 EXPORT_SYMBOL(req_capsule_other_get);
1501 void req_capsule_set_size(struct req_capsule *pill,
1502 const struct req_msg_field *field,
1503 enum req_location loc, int size)
1505 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1507 if ((size != field->rmf_size) &&
1508 (field->rmf_size != -1) &&
1509 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
1511 CERROR("%s: field size mismatch %d != %d (%d)\n",
1512 field->rmf_name, size, field->rmf_size, loc);
1516 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1518 EXPORT_SYMBOL(req_capsule_set_size);
1520 /* NB: this function doesn't correspond with req_capsule_set_size(), which
1521 * actually sets the size in pill.rc_area[loc][offset], but this function
1522 * returns the message buflen[offset], maybe we should use another name.
1524 int req_capsule_get_size(const struct req_capsule *pill,
1525 const struct req_msg_field *field,
1526 enum req_location loc)
1528 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1530 return lustre_msg_buflen(__req_msg(pill, loc),
1531 __req_capsule_offset(pill, field, loc));
1533 EXPORT_SYMBOL(req_capsule_get_size);
1535 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1537 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1538 pill->rc_fmt->rf_fields[loc].nr,
1539 pill->rc_area[loc]);
1542 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1543 enum req_location loc)
1547 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1551 for (; i < fmt->rf_fields[loc].nr; ++i)
1552 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1553 size += size_round(fmt->rf_fields[loc].d[i]->rmf_size);
1557 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1559 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
1564 const struct req_format *old;
1566 LASSERT(pill->rc_fmt != NULL);
1567 LASSERT(__req_format_is_sane(fmt));
1571 * Sanity checking...
1573 for (i = 0; i < RCL_NR; ++i) {
1574 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
1575 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
1576 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
1579 * Last field in old format can be shorter than in new.
1581 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
1582 FMT_FIELD(old, i, j)->rmf_size);
1584 /* last field should be returned to the unswabbed state */
1585 pill->rc_swabbed &= ~(__u32)(1 << j);
1588 EXPORT_SYMBOL(req_capsule_extend);
1590 int req_capsule_has_field(const struct req_capsule *pill,
1591 const struct req_msg_field *field,
1592 enum req_location loc)
1594 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1596 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1598 EXPORT_SYMBOL(req_capsule_has_field);
1600 int req_capsule_field_present(const struct req_capsule *pill,
1601 const struct req_msg_field *field,
1602 enum req_location loc)
1606 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1607 LASSERT(req_capsule_has_field(pill, field, loc));
1609 offset = __req_capsule_offset(pill, field, loc);
1610 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
1612 EXPORT_SYMBOL(req_capsule_field_present);
1614 void req_capsule_shrink(struct req_capsule *pill,
1615 const struct req_msg_field *field,
1616 unsigned int newlen,
1617 enum req_location loc)
1619 const struct req_format *fmt;
1620 struct lustre_msg *msg;
1625 LASSERT(fmt != NULL);
1626 LASSERT(__req_format_is_sane(fmt));
1627 LASSERT(req_capsule_has_field(pill, field, loc));
1628 LASSERT(req_capsule_field_present(pill, field, loc));
1630 offset = __req_capsule_offset(pill, field, loc);
1632 msg = __req_msg(pill, loc);
1633 len = lustre_msg_buflen(msg, offset);
1634 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
1635 fmt->rf_name, field->rmf_name, len, newlen);
1637 if (loc == RCL_CLIENT)
1638 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
1641 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
1644 EXPORT_SYMBOL(req_capsule_shrink);
1646 /* __REQ_LAYOUT_USER__ */